Electric segmented power frequency withstand voltage test device

Abstract

The invention discloses an electric segmented power frequency withstand voltage test device which comprises a motor supporting seat, a motor is fixedly installed in the middle of one side of the motor supporting seat, a pull rod push-pull plate is arranged on one side of the motor supporting seat, and a low-voltage table is installed on one side of the pull rod push-pull plate. The high-low voltage shielding position of the power frequency test of the insulating pull rod is fixed, so that the moving of the insulating pull rod in the power frequency withstand voltage test tool meets the sectional power frequency test requirement of the insulating pull rod; the requirement for the insulation distance of opening and closing of the insulation pull rod is met by replacing high-low-voltage shielding connecting rods with different lengths, then the insulation pull rod is installed in high-low-voltage shielding, the pull rod push-pull plate is further connected with the insulation pull rod, one-time clamping is completed, the motor drives the lead screw to rotate, and therefore the insulation pull rod can move in a segmented mode. The installation frequency of the previous segmented test is reduced, and the test efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of power frequency withstand voltage test, in particular to an electric segmented power frequency withstand voltage test device. Background Art

[0002] With the development of society and the advancement of economic construction, a large number of electronic products and electrical appliances have poured into people's lives. With the increase in people's electricity consumption, GIS circuit breakers in power systems play a key role in high-voltage power transmission and transformation. The insulating rod in the GIS switch is an extremely critical insulating component in the circuit breaker switch, especially in the ultra-high voltage short circuit. The insulating rod has strong electrical and mechanical properties. Therefore, the routine power frequency withstand voltage and partial discharge test of the insulating rod in the manufacturing process is a key process for detecting the insulation performance of the insulating rod. In the power frequency withstand voltage test, due to the limitations of the power frequency withstand voltage test device, the opening and closing operations of the insulating rod in the circuit breaker switch cannot be fully simulated. In order to further reduce the probability of insulation breakdown of the insulating rod and ensure the safety of power transmission, the technical inspection departments of major switch factories have gradually proposed that the factory power frequency test state of the insulating rod should be as close as possible to the opening and closing state of the insulating rod in the GIS circuit breaker switch to improve product quality.

[0003] However, the traditional power frequency withstand voltage test has the following disadvantages:

[0004] (1) The traditional power frequency withstand voltage test tool is to install high and low voltage shielding rings, also known as equalizing rings, at both ends of the insulating pull rod, then ground the low voltage end shield, and then connect the high voltage end shield to the test transformer, and then put the test device into the test tank, see the attached manual Figure 1 The power frequency withstand voltage test of the insulating rod is completed by vacuuming, filling SF6 gas, applying the required voltage, and recovering SF6 gas. The operation is very cumbersome.

[0005] (2) According to the switch factory's segmented test requirements, the original power frequency withstand voltage tooling was improved, and the high-voltage and low-voltage shielding covers were replaced with connecting rods of different lengths to change the position of the high and low voltage shielding to meet the requirements of the insulation pull rod segmented power frequency test. A brief manual is attached Figure 2 And the instruction manual Figure 3 However, although this can meet the test requirements of the segmented power frequency of the insulating pull rod, the test time also increases exponentially with the increase in the number of segments. Each segment of the power frequency withstand voltage test must be completed through operations such as vacuuming, filling with SF6 gas, applying the required voltage, and recovering SF6 gas. In this way, the efficiency of the insulating pull rod factory test is greatly reduced, and the test cost is also doubled. Summary of the invention

[0006] The purpose of the present invention is to provide an electric segmented power frequency withstand voltage test device to solve the problem that the traditional power frequency withstand voltage test tooling proposed in the above background technology is to install high and low voltage shielding rings, also known as equalizing rings, at both ends of the insulating pull rod, and then ground the low voltage end shielding, and then connect the high voltage end shielding to the test transformer, and then put the test device into the test tank, see the attached manual Figure 1 The power frequency withstand voltage test of the insulating rod is completed by vacuuming, filling SF6 gas, applying the required voltage, and recovering SF6 gas. The operation is very cumbersome. According to the section test requirements of the switch factory, the original power frequency withstand voltage tooling is improved, and the high-voltage and low-voltage shielding covers are replaced with connecting rods of different lengths to change the position of the high and low voltage shielding to meet the requirements of the section power frequency test of the insulating rod. A brief manual is attached Figure 2 And the instruction manual Figure 3 However, although this can meet the test requirements of the segmented power frequency of the insulating pull rod, the test time also increases exponentially with the increase in the number of segments. Each segment of the power frequency withstand voltage test must be completed through operations such as vacuuming, filling with SF6 gas, applying the required voltage, and recovering SF6 gas. In this way, the efficiency of the insulating pull rod factory test is greatly reduced, and the test cost is also doubled.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an electric segmented power frequency withstand voltage test device, comprising a motor support seat, a motor is fixedly installed in the middle of one side of the motor support seat, a pull rod push-pull plate is arranged on one side of the motor support seat, a low voltage platform is installed on one side of the pull rod push-pull plate, a high voltage platform is arranged on one side of the low voltage platform, a positioning frame is fixedly installed on one side of the high voltage platform, push-pull plate sliding rails are installed on both ends of one side of the motor support seat, a high and low voltage shielding connecting rod is fixedly installed between the high voltage platform and the low voltage platform, and two first insulating pull rods and second insulating pull rods, which are respectively located on one side of the high and low voltage shielding connecting rods, are installed between the high voltage platform and the low voltage platform.

[0008] Preferably, the surface of the motor support seat is threadedly connected with two first mounting screws, and the motor support seat is fixedly connected to the push-pull plate sliding track through the first mounting screws. The user screws the first mounting screws to assemble the push-pull plate sliding track and the motor support seat together.

[0009] Preferably, the pull rod push-pull plate is slidably connected to two push-pull plate sliding rails respectively.

[0010] Preferably, a first connecting section assembly, a second connecting section assembly and a third connecting section assembly are installed between the two push-pull plate sliding rails, and the first connecting section assembly, the second connecting section assembly and the third connecting section assembly each include a screw and two nuts, and the two ends of the screw are respectively connected to the internal threads of the two nuts, and an output shaft is installed at the output end of the motor, and the screw is connected to the output shaft, and a gasket is laid at the connection between the screw and the output shaft, and one side of the nut is in contact with and connected to the push-pull plate sliding rail. After the screw passes through the output shaft, the user twists the nut, and the thread on the inner wall of the nut matches the thread on the surface of the screw, thereby locking the screw on the push-pull plate sliding rail.

[0011] Preferably, low-voltage shielding parts are installed on both sides of the connection between one end of the low-voltage platform and the first insulating rod, and on both sides of the connection between the other end of the low-voltage platform and the second insulating rod. High-voltage shielding parts are installed on both sides of the connection between one end of the high-voltage platform and the first insulating rod, and on both sides of the connection between the other end of the high-voltage platform and the second insulating rod. The low-voltage shielding parts and the high-voltage shielding parts provide insulation protection from both sides of the first insulating rod and both sides of the second insulating rod respectively.

[0012] Preferably, the surface of the low-voltage platform is threadedly connected with a second mounting screw, and the surface of the high-voltage platform is threadedly connected with a second mounting screw. The low-voltage platform is fixedly connected to the low-voltage shielding component by the second mounting screw, and the high-voltage platform is fixedly connected to the high-voltage shielding component by the second mounting screw. The user fixes the low-voltage shielding component on the low-voltage platform, or fixes the high-voltage shielding component on the high-voltage platform, by turning the second mounting screw.

[0013] Preferably, a plurality of positioning screws are threadedly connected to the surface of the positioning frame, and the user screws the positioning screws to fix the positioning frame at the place of use.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Fix the position of the high and low voltage shielding of the power frequency test of the insulating rod, so that the movement of the insulating rod in the power frequency withstand voltage test tooling can meet the requirements of the segmented power frequency test of the insulating rod;

[0016] 2. By replacing high and low voltage shielding connecting rods of different lengths to meet the insulation distance requirements of the insulating pull rod opening and closing, the insulating pull rod is then installed in the high and low voltage shielding, and the pull rod push-pull plate is further connected to the insulating pull rod to complete a one-time clamping. The motor drives the lead screw to rotate to achieve segmented movement of the insulating pull rod, which not only reduces the number of installation times in previous segmented tests, but also improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a conventional power frequency withstand voltage test tooling diagram of the present invention;

[0018] Figure 2 One of the high and low voltage shielding position diagrams of the present invention;

[0019] Figure 3 This is the second high and low voltage shielding position diagram of the present invention;

[0020] Figure 4 It is a side view of the present invention.

[0021] In the figure: 1. motor support base; 2. motor; 3. push-pull plate sliding track; 4. first mounting screw; 5. pull rod push-pull plate; 6. low voltage shielding member; 7. high voltage shielding member; 8. first insulating pull rod; 9. second insulating pull rod; 10. high and low voltage shielding connecting rod; 11. low voltage platform; 12. high voltage platform; 13. second mounting screw; 14. first connecting section assembly; 15. second connecting section assembly; 16. third connecting section assembly; 161. nut; 162. screw; 163. gasket; 17. positioning frame; 18. positioning screw. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] See also Figure 1-4 The present invention provides an electric segmented power frequency withstand voltage test device, comprising a motor support seat 1, a motor 2 is fixedly installed in the middle of one side of the motor support seat 1, a pull rod push-pull plate 5 is arranged on one side of the motor support seat 1, a low voltage platform 11 is installed on one side of the pull rod push-pull plate 5, a high voltage platform 12 is arranged on one side of the low voltage platform 11, a positioning frame 17 is fixedly installed on one side of the high voltage platform 12, push-pull plate sliding rails 3 are installed on both ends of one side of the motor support seat 1, a high and low voltage shielding connecting rod 10 is fixedly installed between the high voltage platform 12 and the low voltage platform 11, and two first insulating pull rods 8 and second insulating pull rods 9, which are respectively located on one side of the high and low voltage shielding connecting rod 10, are installed between the high voltage platform 12 and the low voltage platform 11.

[0024] The surface of the motor support seat 1 is threadedly connected with two first mounting screws 4, and the motor support seat 1 is fixedly connected to the push-pull plate sliding track 3 through the first mounting screws 4. The user screws the first mounting screws 4 to assemble the push-pull plate sliding track 3 and the motor support seat 1 together.

[0025] The pull rod push-pull plate 5 is slidably connected to the two push-pull plate sliding rails 3 respectively.

[0026] A first connecting section assembly 14, a second connecting section assembly 15 and a third connecting section assembly 16 are installed between the two push-pull plate sliding rails 3. The first connecting section assembly 14, the second connecting section assembly 15 and the third connecting section assembly 16 all include a screw 162 and two nuts 161. The two ends of the screw 162 are respectively connected to the internal threads of the two nuts 161. An output shaft is installed at the output end of the motor 2. The screw 162 is connected to the output shaft. A gasket 163 is laid at the connection between the screw 162 and the output shaft. One side of the nut 161 is in contact and connected with the push-pull plate sliding rail 3. After the screw 162 passes through the output shaft, the user twists the nut 161, and the thread on the inner wall of the nut 161 matches the thread on the surface of the screw 162, thereby locking the screw 162 on the push-pull plate sliding rail 3.

[0027] Low-voltage shielding components 6 are installed on both sides of the connection between one end of the low-voltage platform 11 and the first insulating rod 8, and on both sides of the connection between the other end of the low-voltage platform 11 and the second insulating rod 9. High-voltage shielding components 7 are installed on both sides of the connection between one end of the high-voltage platform 12 and the first insulating rod 8, and on both sides of the connection between the other end of the high-voltage platform 12 and the second insulating rod 9. The low-voltage shielding component 6 and the high-voltage shielding component 7 provide insulation protection from both sides of the first insulating rod 8 and both sides of the second insulating rod 9, respectively.

[0028] The surface of the low-voltage platform 11 is threadedly connected with a second mounting screw 13, and the surface of the high-voltage platform 12 is threadedly connected with a second mounting screw 13. The low-voltage platform 11 is fixedly connected to the low-voltage shielding component 6 by the second mounting screw 13, and the high-voltage platform 12 is fixedly connected to the high-voltage shielding component 7 by the second mounting screw 13. The user fixes the low-voltage shielding component 6 on the low-voltage platform 11, or fixes the high-voltage shielding component 7 on the high-voltage platform 12, by screwing the second mounting screw 13.

[0029] A plurality of positioning screws 18 are threadedly connected to the surface of the positioning frame 17 , and the user screws the positioning screws 18 to fix the positioning frame 17 at the place of use.

[0030] When the embodiment of the present application is in use: by replacing high and low voltage shielding connecting rods 10 of different lengths to meet the insulation distance requirements of the insulating pull rod opening and closing, the insulating pull rod is then installed in the high and low voltage shielding, and the pull rod push-pull plate 5 is further connected to the insulating pull rod. After the installation is completed, the device is placed in an SF6 high-voltage test tank, and then the test tank is evacuated and filled with SF6 gas. The time for the power controller to control the motor operation is adjusted according to the insulation rod segment distance requirements. The operation time of the power controller motor 2 is determined by the speed ratio of the reduction motor 2 combined with the pitch of the lead screw, and then the voltage is increased or decreased, and then the pull rod push-pull plate 5 is driven by the lead screw to move the insulating pull rod to the second section position, and then the voltage is increased or decreased for the second time, and then it is moved to the third section withstand voltage position, and then the voltage is increased or decreased. After the high-voltage test is completed, the SF6 gas is recovered to complete the power frequency withstand voltage test of the insulating pull rod.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric segmented power frequency withstand voltage test device, comprising a motor support seat (1), characterized in that: A motor (2) is fixedly mounted in the middle of one side of the motor support seat (1); a pull rod push-pull plate (5) is arranged on one side of the motor support seat (1); a low-voltage platform (11) is installed on one side of the pull rod push-pull plate (5); a high-voltage platform (12) is arranged on one side of the low-voltage platform (11); a positioning frame (17) is fixedly mounted on one side of the high-voltage platform (12); push-pull plate sliding rails (3) are installed at both ends of one side of the motor support seat (1); a high- and low-voltage shielding connecting rod (10) is fixedly mounted between the high-voltage platform (12) and the low-voltage platform (11); and two first insulating pull rods (8) and second insulating pull rods (9) are installed between the high-voltage platform (12) and the low-voltage platform (11), respectively located on one side of the high- and low-voltage shielding connecting rod (10).

2. The electric segmented power frequency withstand voltage test device according to claim 1 is characterized in that: Two first mounting screws (4) are threadedly connected to the surface of the motor support seat (1), and the motor support seat (1) is fixedly connected to the push-pull plate sliding track (3) via the first mounting screws (4).

3. The electric segmented power frequency withstand voltage test device according to claim 1 is characterized in that: The pull rod push-pull plate (5) is slidably connected to the two push-pull plate sliding rails (3) respectively.

4. The electric segmented power frequency withstand voltage test device according to claim 1 is characterized in that: A first connecting section assembly (14), a second connecting section assembly (15) and a third connecting section assembly (16) are installed between the two push-pull plate sliding rails (3); the first connecting section assembly (14), the second connecting section assembly (15) and the third connecting section assembly (16) each comprise a screw rod (162) and two nuts (161); the two ends of the screw rod (162) are respectively connected to the internal threads of the two nuts (161); an output shaft is installed at the output end of the motor (2); the screw rod (162) is connected to the output shaft; a gasket (163) is laid at the connection between the screw rod (162) and the output shaft; and one side of the nut (161) is in contact with and connected to the push-pull plate sliding rail (3).

5. The electric segmented power frequency withstand voltage test device according to claim 1 is characterized in that: Low-voltage shielding components (6) are installed on both sides of the connection between one end of the low-voltage platform (11) and the first insulating pull rod (8), and on both sides of the connection between the other end of the low-voltage platform (11) and the second insulating pull rod (9), and high-voltage shielding components (7) are installed on both sides of the connection between one end of the high-voltage platform (12) and the first insulating pull rod (8), and on both sides of the connection between the other end of the high-voltage platform (12) and the second insulating pull rod (9).

6. The electric segmented power frequency withstand voltage test device according to claim 5, characterized in that: The surface of the low-voltage platform (11) is threadedly connected with a second mounting screw (13), and the surface of the high-voltage platform (12) is threadedly connected with a second mounting screw (13); the low-voltage platform (11) is fixedly connected to the low-voltage shielding component (6) via the second mounting screw (13), and the high-voltage platform (12) is fixedly connected to the high-voltage shielding component (7) via the second mounting screw (13).

7. The electric segmented power frequency withstand voltage test device according to claim 1 is characterized in that: The surface of the positioning frame (17) is threadedly connected with a plurality of positioning screws (18).

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